function timestampToTime(timestamp) {
  if (timestamp) {
    var date = new Date(timestamp); //时间戳为10位需*1000，时间戳为13位的话不需乘1000
    var Y = date.getFullYear() + "-";
    var M =
      (date.getMonth() + 1 < 10
        ? "0" + (date.getMonth() + 1)
        : date.getMonth() + 1) + "-";
    var D = (date.getDate() < 10 ? "0" + date.getDate() : date.getDate()) + " ";
    var h =
      (date.getHours() < 10 ? "0" + date.getHours() : date.getHours()) + ":";
    var m =
      (date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes()) +
      ":";
    var s =
      date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
    return Y + M + D + h + m + s;
  } else {
    return "";
  }
}

export default timestampToTime;
